The course will be taught by Prof. Linas Svilainis (Department of Electronics Engineering, Kaunas University of Technology)
Date:
Event location: ARCES laboratory (Viale Carlo Pepoli 3/2)
Type: Course
Wednesday, April 17, 2024 - 9:00-13:00, ARCES laboratory, Viale Pepoli 3/2
Thursday, April 18, 2024 - 14:00-18:00, ARCES laboratory, Viale Pepoli 3/2
First, the course will review the electronic architecture of ultrasound systems and discuss the most important blocks used in acquisition and their functions and parameters. A brief review of ultrasound transduction technologies will be given as well.
Then the course will focus on ultrasonic signal generation and processing technologies: most ultrasonic systems actuate simple signals such as pulse or toneburst because these are easy to generate and interpret, but they lack either energy or bandwidth. Spread spectrum (SS) signals, such as arbitrary waveform, chirp (FM-CW, LFM), nonlinear chirp (NLFM) and PSK sequences appear to be a solution for these shortcomings. These signals offer significant advantages which will be reviewed in the course: better SNR can be achieved by increasing duration and without losing the bandwidth; spectrum can be programmed, or bandwidth expansion/losses compensation exercised.
The last part of the course will focus on Time of flight (delay) estimation techniques and their application for material thickness measurement, ultrasound velocity estimation, mechanical load or stiffness evaluation, curing or melting monitoring, temperature measurement, food processing etc.
Dr. Linas Svilainis received its PhD degree from the Kaunas University of Technology (Lithuania) in 1996. Since 2009 he has been a Full Professor at the Department of Electronics Engineering, Kaunas University of Technology, Lithuania. He was a Visiting Scientist at Linkoping University, and University College London, and a Visiting lecturer at the National Technical University of Athens, Technical University Sofia, Miguel Hernández University of Elche. He is a Senior IEEE member, and a Member of UFFC, and Instrumentation and Measurement societies. He worked in a private company as head of the R&D department for large-scale LDE video display development. He has more than 20 years of experience in Electro-Magnetic Compatibility (EMC). He is a Member of the National Standard Committee for Electromagnetic Compatibility and recipient of the 2013 Lithuania Academy of Science Award in Electronics. He served as an Expert for various national and international agencies, Editorial board member and Invited Editor for Sensors and Applied Sciences, and Associate Editor for the IEEE Transactions on Instrumentation and Measurement. He has over 30 years of experience in Ultrasound Electronics, and Signal Processing for ultrasonic imaging and measurements. In this field, he has supervised several R&D industrial contracts and national and international research projects, and he co-authored more than 100 papers, 3 books, and 2 patents. Prof. Svilainis is currently working on spread spectrum signals, time of flight estimation, and laser ultrasound.